Walking-beam for drilling apparatus.



G. H. COPELAND.

WALKING BEAM FOR DRILLING APPARATUS.

APPLICATION FILED TAILS. 1914. Patented Dec. 29, 191A.

Witnesses Attorneyso GEORGE H. COPELAND, 0F RICH HILL, MISSOURI.

WALKING-BEAM FOR DRILLING APPARATUS.

i Specification of Letters Patent.

Patented Dec. 29, 1914.

Application filed January 3, 1914. Serial No. 810,242.

T 0 all whom it may concern:

Be it known that I, GEORGE H. COPELAND, a. citizen of the United States, residing at Rich Hill, in the county of Bates and State of Missouri, have invented a new and useful W'alking-Beam for Drilling Apparatus, of which the following is a specification.

The present invention appertains to a drilling apparatus for drilling or boring prospecting holes or Artesian wells, or the like, and aims to provide a novel and improved walking beam therefor.

It is the object of the present invention to provide a unique walking beam structure for a drilling apparatus, adapted to be oscillated or rocked'by the usual pitman, and arranged to actuate the drill cable in an effective manner.

As a more specific object, the present invention aims to provide a contrivance of the nature indicated, embodying a main walking-beam, and a supplemental walking beam, the former being adapted to be actuated by the pitman, and the latter being arranged to be operated by the former, and toactuate the drill cable, whereby the device will be advantageous in its use.

With the foregoing general objects outlined, and with other objects in view, which will be apparent as the nature of the invention is better understood, the present invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made .within the scope of what is claimed without departing from the spirit of the invention.

The invention has been illustrated in its preferred embodiment in the accompanying drawings, wherein- 4 Figure 1 is afragmental side elevation of the improved structure. Fig. 2 is a cross section taken approximately on the line 22 of Fig. 1. Fig. 3 is a reduced side elevation of a walking beam structure constructed in accordance with the present invention, and including a slight modification or variation.

In carrying out the present invention, there is provided a suitable samson post 1, which as illustrated, embodies the twin spaced uprights or standards 2. A rock shaft 3 has its terminal portions journaled through the upper end portions of the ably carried by the terminals of the stirrup to engage the shaft 3 for clamping the stirrup to the shaft. The main walking beam 6 has its intermediate portion seated within the lower end or bend of the stirrup and secured therein by bolts, rivets or other securing members, the usual pitman 7 being operatively connected to one end of the beam 6. It is to be understood, however, that the main beam 6 may not only be in the form of a lever of the first order, as illustrated in Fig. 1, but may be in the form of a lever of the second order, as illustrated in Fig. 3, wherein the main beam 6 has one end secured within the stirrup i and has the pitman 7 connected thereto intermediate its ends. The supplemental walking beam or lever 8 has one end loosely embracing the shaft 3 between the terminals of the stirrup 4, and has its other or free end formed with a cam face 8 for the engagement of the drill cable 9, whereby the drill cable may be properly reciprocated as the walking beam structure is oscillated or rocked. The other end of the main beam 6, or that arm of the main beam disposed below the supplemental beam 8, has a pair of upstanding guide arms 10 secured thereto between which the supplemental beam 8 is guided for slight oscillatory movements relative to the main' beam 6.

A coiled spring 11 is secured upon the main beam 6 adjoining the guide arms 10, and is arranged to have the supplemental beam 8 seated thereon, the supplemental beam 8 being preferably provided with a depending lug 12 adapted to enter the uppermost convolutions of the spring 11 to maintain the spring in position when the supplemental beam 8 is seated thereon.

In operation, when the supplemental beam 8 is swung downwardly and seated upon the spring Ill, so that the supplemental beam is guided between the arms 10. the drill cable 9 may be passed over the free end of the supplemental beam 8, or may be applied to the free end of the beam 8 in any suitable manner, so that when the main beam 6 is oscillated through the reciprocation of the pitman 7 the drill cable 9 will be given a vertical or reciprocatory movement to properly actuate the drilling or boring tool suspended by the cable. It is to be noted that both of the beams swing about the axis of the rock shaft 3, whereby there will be little relative movement between the two beams, although the supplemental beam 8 may yield slightly relative to the main beam 6, inasmuch as the supplemental beam is supported yieldably or resiliently by the spring 11 carried by the main beam. IVhen it is desired to raise the tool, the cable 9 may be raised in the usual manner, and the supplemental beam 8 may be swung upwardly, out of the path of the cable and tool, in order that the tool may readily pass upwardly without interfering with either of the beams, the supplemental beam 8 being readily swung downwardly between the guide arms 10 and upon the spring 11, when the beam structure is again brought into operation. The beam structure may also be inverted, in order that the drill cable 9 may be trained over a mast, or the like, as is customary in certain types of drilling apparatus.

From the foregoing, the advantages and capabilities of the present contrivance will be obvious to those versed in the art, and need not be further commented upon. It might be mentioned, however, that when the main beam is swung, to lift or raise the supplemental beam, the spring 11 will be brought under compression, so as to be brought into motion after the main beam has started to swing. Then, when the 'main beam reaehes the end of its stroke or oscillation, the throw ,of the spring 11 and the inertia of the supplemental beam, causes the supplemental beam to continue its .upward movement, after the main beam hasstarted to swing in the other direction. hen, after the main beam reaches the end of its backward stroke or swing, the supplemental beam will drop sharply or quickly, permitting the drill cable and drill to descend in an effective manner, the supplemental beam beingcaught by the main beam and then raised torepeat the operation.

Having thus described the invention, what is claimed as new is:

A 1. In a drilling apparatus, a main and 9.

supplemental walking beam, the former bemg arranged to be rocked, and the latter bemg'arranged to actuate a drill cable, a

guide carried by one beam for guiding the other, and a yieldable seat carried by one beam for the engagement of the other.

2. In a drilling apparatus, a samson post, a main and a supplemental walking beam fulcrumed to the said post, the main beam being arranged to be rocked and the supplemental beam being arranged to actuate a drill cable, a pair of guide arms carried by the main beam for normally receiving the supplemental beam, and a yieldable seat carried by the main beam against which the supplemental beam is adapted to rest.

3. In a drilling-apparatus, a shaft, a stirrup connected thereto, a main walking beam secured within the stirrup and arranged to be rocked, and a supplemental walking beam connected to the shaft, arranged to he actuated by the main beam, and arranged to actuate a drill cable.

4. In a drilling apparatus, a shaft, a stirrup having its terminals connected thereto, a main walking beam secured within the stirrup, a supplemental walking beam hav-' ing one end connected to the shaft between the terminals of the stirrup, having its free end arranged to actuate a drill cable, and having its intermediate portion arranged to be supported by the main beam.

5. In a drilling apparatus, a shaft, a stirrup connected thereto, a main walking beam secured within the stirrup and arranged to be rocked, a supplemental beam having one end connected to the shaft between the terminals of the stirrup, and having its free end arranged to actuate a drill cable, a guide carried by the main beam for normally receiving the supplemental beam. and a yieldable seat carried bv the main beam for the engagement of the supplemental beam.

In testimony that I claim the foregoing 

